Free vibration of two cables interconnected by a damper
Vibration mitigation of cables is a crucial problem for cable-supported bridges.In this paper,a system of two parallel cables with a damper location moves from the left to the right cable anchorage is proposed and analysed.Based on displacement continuity and force equilibrium at the damper locations,the characteristic equation of the system is derived.The complex characteristic equation is then numerically solved to obtain some special limiting solutions.The damping and frequency characteristics are discussed in detail for the case when the two cables are identical and different.Special attention is given to the case when the two cables are different.The effects of mass-tension ratio,cable length ratio and frequency ratio on damping are also addressed.The results show that as the damper location moves from the left to the half of the cable,there is some difference mode evolutions for the 3th and 4th vibration mode and different solution branches.And the results of this paper could be useful for vibration mitigation of two parallel cables and further development of design guidelines for cable networks with attached dampers.
cable damper frequency damping ratio vibration mode
H.J.Zhou X.B.Zhou G.Z.Yao L.M.Sun Feng Xing
Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering,Shenzhen University State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,C
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
2428-2436
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）